Compressor



May 17, 1932- v J. o. CARREY 1,858,817

' COMPRESSOR Filed Jan. 24, 1927 8 SheetsSheet 2 May'l'l 1932. J, o, CARREY 1,858,817

COMPRESSOR Filed Jan. 24,. 192 8 Sheets- Sheet 3 May 17, 1932. J} C) CARREY 1,858,817

COMPRES SOB Filed Jan. 24, 1927 8 Sheets-Sheet 4 May 17, 1932. J. o. CZARREY COMPRESSOR F'qed Jan. 24, 1927 8 Sheets-Sheet 6 7 6 a a W V 4% w 0 lm/ g H a 4 ix F6 7 7 u w w w 4 4 Y x 6 e M n" J1 J. O. CARREY COMPRESSOR Filed Jan. 24, 1927 May 17, 1932.

8 Sheets-Sheet 7 F zzf May 17, 1932- J o. CARREY COMPRESSOR Filed Jan. 24. 1927 8 Sheets-Sheet 8 Fatented May 37, E932 rains JOHN O. OARREY, OI ST. LOUIS, MISSOURI, ASSIGNOR TO U & C ENGINEERING 00., INCL,

OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI COMPRESSOR Application filed January 24, 1927. Serial No. 163,141.-

This invention relates to new and useful improvements in fluid compressors of the type disclosed in my c'opending application, filed February 20, 1926, Serial Number 89,634. In this form of compremor the compression chamber or cylinder in which the compressing piston operates is mounted for oscillatory movement, such movement being imparted to the cylinder by the action of the piston as the latter is actuated by the eccentric means mounted on the driving shaft.

This oscillatory movement is utilized to bring the port formed in the head of the cylinder alternately into register with the intake and discharge ports formed in "a stationary member or casing in which the cylinder opcrates. Thus no spring-actuated valves are necessary to control the passage of the fluid through the compression chamber and consequently all the noises and loss of compression incidental tosuch spring valves are thereby eliminated. v

The primary objects of thepresent invention are to provide a compressor of the type described and to provide separate circulatory systems for the'lubricant and the compressible fluid, said systems being located exteriorly of the compressor whereby the fluid may be partially cooled before being admitted. to the condenser or conveyed away from the. apparatus and the lubricant is cooled before being returned to the compressor;

Other objects of the invention are to'arnism.

Further objects of the invention are to mount the complete compressing'mechanism ina suitable cage or support, thereby facilitating the assembling thereof, and to place said cage in a casing which is hermetically sealed, thereby insuring against leakage'and providing a reservoir of ample capacity for the lubricant. Still further objects of the invention are range the compressor so that the lubricant bricant throughout the compressor mechato dispose the cooling coils through which the lubricant and the refrigerant medium pass adjacent to one side of the compressor coaXially with the shaft thereof, whereby air may be circulated radially through said coils by means of suitable blades mounted on said shaft or on the coupling connecting said compressor with the motor.

Still further objects of the invention are to provide a compressor having a multiple compression chamber and a high pressure chamber common to all of said compression chambers, and to provide a disk valve having a wiping contact with the ported face of said high pressure chamber for controlling the ports of the respective compression chambers, and to provide means for operating said disk valve in a positive predetermined relation with the driving mechanism of the com; pressor.

Additional objects of the invention are to mount the whole operating compressor unit, including the compressor and the motor, on an improved mounting having a single point of support, said support being preferably of resilient nature,'thereby eliminating vibration and noises incidental to the operation of the apparatus and providing simple and eflicient means for adjusting or balancing the apparatus on the support.

With these and other objects in view, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a topplan view of the apparatus showing diagrammatically connections therefor. v

Figure 2 is an enlarged plan view of the apparatus. a

4 Figure 3 is a side elevational view of same, partly in cross section.

Figure his a vertical cross section taken longitudinally through the compressor.

" Figure 5 is a vertical cross section taken transversely through the compressor on line 55 of Figure 4.

Figure 6 is a fragmental plan view of the high pressure chamber and the rotary valve and motor in dotted lines.

Figure 9 is a top plan view of the mounting. Figure 10 is an end elevational View partly in cross section of same.

Figure 11 is a transverse section taken online 11-11 of Figure 9.

Figure 12 is a detail view taken on line 12-12 of Figure 9.

Figure 13 is a detail view taken on line 1313 of Figure 9.

Figure 14 is a plan view of the cage utilized for supporting the compressing mechanism.

Figure 15 is an end elevational view of same.

Figure 16 is a vertical cross section taken on line 1616 of Figure 3.

Figure 17 is a horizontal cross section taken on line 17-17 of Figure 16.

Figure 18 is a vertical cross section taken on line 1818 of Figure 3.

In the present invention, the compressor which is indicated at 10 is used as part of a refrigerating apparatus for compressing the refrigerant. The latter after leaving the compressor is passed through a condenser unit 11 from which it is then conveyed to a pair of tubes 12 horizontally disposed on each side of the compressor 10 and condenser 11 where the condensed refrigerant is cooled. Thesepipes also serve as reservoirs so as to maintain a supply of refrigerant and insure a uniform discharge of the latter into the eX- pansion unit 14 which is located in the chamber desired to be cooled.

The compressor proper is illustrated in detail in Figures 4 to 7 and comprises a casing 15 consisting of a tubular section 16 and end plates 17 which hermetically seal the compressing mechanism 18 located within said casing. The plates 17 are provided with flanged portions 17 in which are secured the ends of bolts 19 which latter are located externally of casing 16 and serve to draw the end plates against the ends of said casing.

lhe compressingmechanism 18 is mounted in a'cage or support 20 having an arcuate top portion 21 arranged against the underside of the upper half of the tubular section 16 and having end pieces 22 disposed adjacent to the respective end plates 17 End pieces 22 are provided with removable circular disks 22 which are formed with bearings 24 for receiving a horizontally and longitudinally disposed shaft 25 (see Figs. 4 and 15). The lower ends of said end pieces 22 terminate in downwardly presented semi-circular boxes 26 adapted to have detachably securedthereto complementary semi-circular pieces 27 so as the axis thereof.

to clamp therebetween bearings 28 of a driving shaft 29.

Members 27 have screw-seated therein screws 30, the lower ends of which are adapted to bear against the lower portion of casing 16 and thus hold support 22 in proper position in said casing. Screws 30 are adjustable to permit adjustment of support 22 and j amb nuts 31 are used to lock said screws 30 in adjusted position.

A pair of eccentrics 32 are fixed on shaft 29in spaced relation with each other and operating on each eccentric is an eccentric strap 34 of a piston 35, the latter being extended upwardly in vertical plane with the respective eccentric and operating in a compressing chamber 36 of a cylinder 37. Cylinders 37 are arranged within support 20 and are provided with trunnions 37 which are mounted for oscillatory movement on shaft 25. Each piston 35 is provided with a Vertically disposed slot 35 which slot is traversed by shaft 25. The length of the slot is slightly greater than the throw of the eccentric in order to allow reciprocating movement of piston 35 in compression chamber 36.

Cylinders 37 are arranged in chambers 38 which are formed by a horizontally disposed tubular portion 39 formed integrally with and depending from the top wall 21. Said cylinders are diametrically disposed in said tubular portion and are pivotally mounted on shaft 25 for oscillatory movement about Segmental slots 39 are arranged in the lower portion of tubular section 39 for accommodating said cylinders 36 and providing clearance for the operating movements of pistons 35.

A fluid intake chamber 40 is formed in portion 21 and has an intake port 41 leading into chamber 38 at a point near and to one side of the verticalaxis of each cylinder 37. A discharge port 42 leads from chamber 38 into a high pressure chamber 44 which latter is located immediately 'above said cylinders and is provided with a flat bottom 45 which is inclined from horizontal as shown in Figure 5. The discharge port 42 is arrangedin spaced relation with the intake port. 41.

The high pressure chamber 44 communicates through a suitable passageway 46 with a discharge chamber 47 which is located preferably opposite to the intake chamber 40. An intake nipple 48 passes through an opening formed in casing 15 and is screw-seated in top wall 21 and opens into intake chamber 40. A discharge nipple 49 passes through an opening formed in casing 15 and is threaded into wall 21 and communicates with the discharge chamber 47. Nipples 48 and 49 receive lock nuts 50 which are adapted to be screwed against the outside of casing 15 and serve not only to lock said nipples in position but also hold the support or cage 20 in position in said casing.

Packing means 51 is providedto seal the nipple apertures in the casing and prevent communication between the atmosphere and the interior of said casing.

The high pressure chamber 44 is formed by providing an upwardly opening recess in wall portion 21 immediately above cylinder or cylinders 37 and screw-seating therein a cap 52. .The bottom face 45 of this recess is inclined from thehorizontal in order to insure a Wiping surface contact with a disk valve 54, which latter is disposed in high pressure chamber 44 and is operated to open and close the discharge ports 42 in a definite relation with the reciprocating movement of pistons 35 and the oscillatory movement of cylinders 37. This disk valve preferably receives gyratory movement by means of an eccentric 55 on which it is mounted. Said eccentric is fixed to the upper end of a shaft 56 which end project-s above face 45.

Valve shaft 56 extends upwardly from one side of operating shaft 29 and is inclined from vertical in order to clear trunnion shaft 25. A bearing 57 is formed integral with the lower portion of'tubular section 39- and has journaled therein the lower end of valve shaft 56, while the upperportion of said shaft is journaled in and extends through a partition wall 58 arranged in chamber 38 of tubular section 39.. Valve shaft 56 is actuated by intermeshing gears 59 and 60 fixed, respectively, to operating shaft 29 and valve shaft 56 so that as shaft 29 actuates pistons 35, disk valve 54'is operated to open and close discharge ports 42 in proper time relation with the operation of said pistons.

Where two cylinders 37 are used, high pressure chamber 44 is arranged centrally between said cylinders and gear 59 is fixed-on shaft 29 equidistant from eccentrics 32 as shown in Figure 4 and the discharge ports44 are disposed at diametrically opposite points suitable distances with respect to the axis of shaft 56 and with respect to the size of disk 'valve'54. In this manner, opening and closing ofthe discharge ports 42 is effected by a disk valve having gyratory contact with the fate 45 into which said discharge ports open. No springs are necessary to insure a sealing contact with the disk valve and the face 45 cooperating therewith. Consequently there is no lost motion or vibration produced by the operation of the valve and the valveis positively actuatedand is maintained in proper sealing contact at all times.

In the operation of the machine, the lower portion of the casing is filled with suitable lubricant which insures eflicient lubrication of the actuating mechanism. This lubricant is conveyed exteriorly of the casing near the lower end thereof for the purpose of coolcooled is readmitted into the casing at substantially the highest point in the. casing so that the cooled lubricant may be distributed to all of the operating parts of the compressing mechanism and also serve to cool the high pressure and discharge chambers thereof.

The means for circulating the oil consists of a centrifugal pump 61 which includes a rotating member or impeller 6'1 fixed to one end of shaft 29 and operating in an extension housing 62 arranged in one of the end plates 17. This extension housing 62 opens into the casing 15. l

The rotating member or impeller 61 has radially disposed vanes 63 which throw the oil by centrifugal action against the peripheral wall of housing 62, thereby causing said oil to be discharged from said housing under pressure. While in the present instance a special form of pump is disclosed, it is obvious that other types of pumps can be used equally as well. The oil is conveyed from the housing by a pipe connection 64 which leads outwardly from said housing and is connected to the intake end of a coiled pipe 65. This coiled pipe section is located exteriorly of housing 15, as shown in Figures 1 to 3. In the present case this pipe is in the form of a helical coil disposed horizontally between the casing 15 and the motor 67 with the axis of the coils disposed preferably concentrically'with the shaft 29 (see Figs. 1 to 3) The individual coils of the helix are spaced from each other sufficiently to allow another helical coil of the same dimensions, such as condenser unit 11 to be placed therebetween, as more fully described hereinafter.

The other end of pipe 65 is connected by a return pipe 66 to casing 15, preferably at a lowerahalf of the casing from which it then enters the pump housing 62 and is again forced in circulation through the cooling pipe 65. i

The compressing mechanism 18 is preferably actuated by a motor 67 which is arranged coaxially with shaft 29 and has its shaft 68 operatively connected thereto in any suitable manner and preferably by a multiple fly wheel device 69, such as disclosed in my copending application filed Sept. 20, 1926,

Serial No. 136,553.

Inthis type of coupling device, a pair of fly wheel members 69 and 69", respectively,

i is used. Member 69 is fixed to driven shaft 29 and member 69 is fixed to motor shaft 68.

Said members have their annular flanges presented toward each other to form a recess for receiving suitable clutching means comprising members 69 which are carried by I 69 and have operative engagement with members 69. These arms 'are held in retracted positions by means ofsprings 69 and are locked in said positions by auxiliaryarms 69. The latter are operable at a higher rate of speed than arms 69 and serve to rel-ease said arms 69 at said higher speed in order to insure positive operation of arms 69 and clutch members 69. Springs 69 are connected to arms 69 and arms 69, respectively, and serve to move both arms in retracted positions when the speed drops below a predetermined rate. Auxiliary arms 69 are connected by links 69 to a disk 69, which latter is freely mounted on the hub of driving member 69 and serves to interconnect said auxiliary arms so as to provide uniform operation thereof.

In order to seal the shaft opening through which shaft 29 projects outwardly from casing 15, a seal 71 is preferably used. This seal consists of a member 72 fixed to the shaft and having a convex face in sealing engagement with the concave face of a member 74, which latter is loosely arranged with respect to shaft 29 and has its opposite. face in sealing contact with a cap 75 through which said shaft 29 projects outwardly. Cap 7 5 is preferably secured to a tubular extension 76 which projects outwardly from one of the end plates 17 A coiled spring 77 is interposed between one of the shaft bearings 28 and member 72 and serves to maintain members 72 and 74. in yielding pressure contact with each other and member 74 is further held in pressure contact with cap 75. This shaft seal device is more fully disclosed in my copending application filed July 3, 1926 Serial No. 120,463, in which the invention is fully described and claimed. This application eventuated in United States Letters Patent No. 1,740,682, dated December 24, 1929. As described in said application, the inner face of cap 75 which is in engagement with member 74 is inclined from its normal plane and consequently causes slight rocking motion of member 74 which produces a wiping contact between the interengaged surfaces of seal members 72 and 7 4 and effectually seals the shaftopening so that no passage of fluid can take place from the interior of the casing outwardly to the atmosphere and vice versa.

Casing 15 is fixed by means of fastening devices 78 to one end of a horizontally disposed supporting member 79 while motor 67 is secured to the opposite end of said mem- The upper ends of said springs are engaged by washers 85 which are carried by the upper ends of bolts 86. Said bolts extend downvvardly through springs 82 and suitable apertures formed in ears 8% and have their heads 87 resting against the underside of ears 88,

which latter are formed integral with base,

plate 81 and in vertical plane with lugs 84. The upper threaded ends of bolts 86 receive nuts 89 which when turned in the proper directionincrease or decrease the tension of springs 82 and thus serve to adjust plate 79 about its single supporting point 80.

The support point is centrally disposed so as to bring the supporting member 79 and 'parts carried thereby into balance as close as possible. Springs 82 are adjustable by means of nuts 89 to regulate the tension bearing against said member 7 9 and thereby afford accurate balancing of the latter. The support point 80 is preferably formed spherical, being in the present instance in the form of a rubber ball which rests in an upwardly presented concave seat 91 formed in base plate 81 and engages a downwardly presented seat 92 formed in a cross piece 94:. The latter, which extends transversely of supporting member 79, is secured in position by fastening devices 95 which engage the endsof member 94 and pass through slots 96 formed lon gitudinally in horizontally presented flanges 7 9 of member 79. Thus cross piece 94 can be moved longitudinally of supporting member 79 so as to shift the point of support and take care of the differences in weights of the compressor unit 10 and the motor 61.

Projecting laterally from the sides of supporting member 79 are saddles 97 which receive and support tubular members 12. A top'section 97 is detachably secured to each saddle 96 and holds member 12 against displacement.

The compressed refrigei'ant upon leaving discharge chamber 47 through discharge nipple 49 (see Fig. 5) is conveyed by a pipe connection 98 to the condenser unit 11, to the intake end of which it is connected as indicated at 99 (see Fig. 2). p

This condenser unit 11 consists of a coiled pipe 100 located exteriorly of the casing 15. In the present instance it is in the form of ahelical coil disposed horizontally and preferably coaxially with coiled pipe 65. The

diameter of the individual coils of pipe 100 and the spacing of said coils from each other is substantially identical with the diameter and spacing of the individual coils of outlet pipe 65. This permits the interposition or insertion of the coils of one pipe section between the coils of the other pipe section to form substantially a double coiled pipe arrangement with the coils aranged in juxtaposed relation.

The discharge end 101 of the coiled section 100 terminates adjacent to motor 67 and is connected by a pipe connection 102 to the forward end of one of the tubular members 12. The opposite end of this member is connected by a pipe 104 to the corresponding end of the other tubular member 12 so that the condensed refrigerant can pass from the first member 12 to the second one. From the latter member the refrigerant is conveyed by a pipe connection 105 to the intake end of the expansion element 1 1 where the refrigerant is allowed to expand and produce the desired cooling effect in the chamber in which said expansion element is located. After traversing this expansion element, the refrigerant is conducted by a return pipe 106 to the intake nipple 49 and the cycle of operation is repeated.

A retarding trap 107 is interposed in pipe 105 and controls the passage of the refrigerant therethrough. An expansion valve 108 is arranged in pipe 105 adjacent to expansion element 14 and is adjustable so as to regulate the flow of refrigerant into said ex ansion element. In order to prevent it rom entering the compressor, a strainer 109 is interposed in pipe 106 and is provided with a screen 110 which strains the refrigerant and arrests any particles of solids or gummy substances which might accidentally find their way into the system. This strainer is removable so as to permit cleaning of the screen 110 when necessary.

Coil pipes and 100 are arranged in the same plane with each other and coaxial with aligned shafts 39 and 68. The fly wheel 69 which operatively interengages said shafts 7 carries fan blades 111 spaced suitably from blades 111.

the inner faces of coils 65and 100. Thus when the apparatus is in operation, blades 111 force the air outwardly in between the.

coils of sections 65 and 100 and consequently cool the fluids passing therethrough. Blades 111 are preferably inclined from the longitudinal axis in a definiterelation with the line of rotation so that a current of air is directed when the machine is in operation ina direction of the compressor 10 and away from motor 67. Inthis manner, both the motor and thecom-pressor are cooled by the air and the heatproduced by the operation of the motor and the compressor and the compression of the refrigerant is readily dissipated by thecurrents of air set up My improved compressor is highly efficient in operation. is practically noiseless, and by conveying the oil externally of the comby the sure chamber and the cylinders of the com:

pressor, the latter is prevented from heating and the lubricant is distributed to all of the" operating parts of the compressing mechanism by suitable oil ducts such as indicated at 112. The cooling is preferably accomplished by pipe 65 arranged coaxially with shafts 29 and 68 and fan 111 carried by fly wheel device 69. The operation of the latter causes air to be forced radially through the coils of pipe 65.

The single point support 80 supports the complete apparatus and is preferably formed resilient so as to absorb vibrations produced by the operation of the apparatus. The fluid displacement mechanism which may be used either for compressing or vacuum operations is arranged so that it is operatively mounted in cageor support 20 which is remov-ably disposed in the open-ended tubular member 16 adapted to have the ends hermetically sealed by end plates 17 A packing 114 is preferably used to form a fluid-tight joint between said plates 17 and section'16.

When in operation the pressure in the casing 15 is the same as the pressure in the high pressure chamber so as to eliminate the possibility, when used for refrigerating purposes, of the refrigerant leaking into the casing. However, should any refrigerant escape into the casing, it cannot pass outwardly into the atmos here due to the sealing of the casing by pac ing 114 and shaft seal 71.

Sections 22 are made removable 'in order to facilitate assembly and provide access to the interior of tubular section 39 for machining that various changes in the construction and v arrangement of parts of my apparatus could be made and substituted for those herein.

shown without departing from the spirit of my invention.-

I claim:

' I 1. In an apparatus of the class described,

the combination of a fluid displacement mechanism comprising astationary support,

a plurality of cylinders mounted in a straight line in said support, a horizontally disposed shaft mounted in said support and extending through said cylinders and forming a pivot for the oscillatory movement thereof,

pistons operating in said cylinders and imparting oscillatory movement theretoin correlation with -'their reciprocating movement, each of said. pistons being provided with a longitudinally disposed slot for receiving said shaft, meansfor actuating said pistons,

and a casing for wholly enclosing and hermetically sealing said mechanism.

2. In an apparatus of the class described,

the combination of a fluid displacement and hermetically sealing said mechanism,

and a horizontally disposed driving shaft extending inwardly through one end of said casin for operating said means.

3. in an apparatus of the class described, the combination of a fluid displacement mechanism comprising a stationary support, cylinders mounted in a straight line in said support for oscillatory movement, pistons operating in said cylinders and imparting oscillatory movement thereto in correlation with their reciprocating movement, means for actuating said pistons, tubular hor1z on-- tally disposed casing for wholly enclosing and hermetically sealing said mechanism, a

driving shaft extending inwardly through one end of said casing for operating said means, and a sealing means cooperating with said shaft and said end for sealing the shaft opening in the latter.

4:. A fluid displacement apparatus compr1sing a stationary support provided with a horizontally disposed tubular portion having spaced radially disposed intake and outlet ports, an oscillatory cylinder diametrically disposed'in said tubular portion and having an integral closed head, the axis of movement of said cylinder being concentric with the axis of said tubular portion, a piston operating in said. cylinder, means including a driving shaft for actuating said piston, the head of said cylinder being provided with a longitudinally disposed port adapted to be brought by the oscillatory movement of said cylinder alternately into register with said ports whereby the passage or fluid through said cylinder is controlled by the oscillatory movement of the latter, and valve means mounted in said support for opening and closing one of said ports in correlation with the operation of said piston.

5. A fluid displacement apparatus comprising a stationary support provided with a horizontally disposed tubular portion having spaced intake and outlet ports, an oscillatory cylinder diametrically disposed in said tubular portion and having an integral closed head, the axis of movement of said cylinder being concentric with the axis of said tubular portion, a piston operating in said cylinder, means including a driving shaft for actuating said piston, the head of said cylinder being provided with a longitudinally disposed port adapted to be brought by the oscillatory movement of said cylinder alternately into register with said ports, whereby the passage of fluid through said cylinder is controlled by the oscillatory movement of the latter, valve means mounted in said support for opening and closing one of said ports in correlation with the operation of said piston, and asingle casing for wholly enclosing and hermetically sealing said support and parts associated therewith.

6, A fluid displacement apparatus comprising in combination a stationary support provided with a horizontally disposed tubular portion having spaced intake and outlet ports, an oscillatory cylinder diametrically disposed in said tubular portion and having an integral closed head, the axis of movement of said cylinder being concentric with the axis of said tubular portion, a piston operating in said cylinder, means including a driving shaft for actuating said piston, the head of said cylinder being provided with a longitudinally disposed port adapted to be brought by the oscillatory movement of said cylinder alternately into register with said ports, whereby the passage of fluid through said cylinder is controlled by the oscillatory movement of the latter, valve means mounted in said support for opening and closing one of said ports in correlation with the operation of said pis ton, a single casing for wholly enclosing and hermetically sealing said support and parts associated therewith, and an inlet connection and a discharge connection arranged in said casing and communicating with the respective ports of said support.

7. A fluid displacement apparatus comprising in combination a stationary support provided with a horizontally disposed tubular portion having spaced intake and outlet ports, an oscillatory cylinder diametrically disposed in said tubular portion and having an integral closed head, a piston operating in said cylinder, a driving shaft journaled in said support, operating eccentric connections between said piston and said shaft, the head of said cylinder havingv a convex face for forming a close sliding contact with the concave face or" said tubular portion, there being a longitudinally disposed port formed in said closed end, said port being adapted to be brought by the oscillatory movement of the latter alternately into register with said intake and outlet ports for controlling the'passage of fluid therethrough and through said cylinder, and a disk valve having a wiping contact with the outer face or said tubular portion for opening and closing said outlet port.

8. A fluid displacement apparatus comprising in combination a stationary support pro vided with a horizontally disposed tubular portion having spaced intake and outlet ports, an oscillatory cylinder diametrically distill for opening and closing said discharge port,

and means cooperating with said driving shaft for actuating said disk valve in timed relation with the operation of said piston.

9. A fluid displacement apparatus comprising in combination a stationary support provided with a horizontally disposed tubular portion and an intake chamber and a high pressure chamber, there being formed an intake and a discharge port which lead from the respective chambers and open at spaced predetermined points into the interior of said tubular portion, a cylinder disposed diametrically in said' tubular portion and journaledconcentrically therewith for oscillatory movement, said cylinder having an integral closed head operating in surface contact with the concave face of said tubular portion, said head being provided with a longitudinally disposed port adapted to be brought by the oscillatory movement of the cylinder alternately into register with said intake and discharge ports, a disk valve in said high pressure chamber and mounted for wiping contact with the outer face of said tubular portion .for opening and closing said discharge port, a discharge chamber formed in said support, and passageways leading from said high pressure chamber into said discharge chamber.

1Q. A fluid displacement apparatus comprising 1n combination a stationary support provided with a horizontally disposed tubular portion and an intake chamber and a high pressure chamber, there being formed an intake port and a discharge port lead ing from the respective chambers and opening at spaced predetermined points into the interior of said tubular portion, a cylinder disposed diametrically in said tubular portion and journaled concentrically therewith for oscillatory movement, said cylinder having an integral closed head operating in surface contact with the concave face of said leading from said high pressure chamber into said discharge chamber, inlet connection leading into said intake chamber, and an outlet connection leading into said discharge chamber. A

11. In a fluid displacement apparatus, the combination of a casing having a'tubular body portion and separable heads and adapted to be hermetically sealed, and a support removably arranged'within said tubular body portion independently of said heads and wholly enclosed by said casing, said support being adapted to have mounted thereon the fluid displacement mechanism. k i

12. In a fluid displacement apparatus, the combination of a fluid'displacement mechanism, a cage for operatively supporting the same, a horizontally disposed tubular member adapted to receive said cage and wholly enclose the latter and the mechanism supported thereby, and an end plate for hermetically sealing one end of said tubular member.

13. In a fluid displacement apparatus, the combination of a fluid displacement mechanism, a support for operatively mounting said mechanism, a horizontally disposed shaft journaled in said support for actuating said mechanism, a horizontally disposed tubular member open at one end and adapted to removably receive said support and wholly enclose said mechanism, an end plate for hermetically sealing the open end of said tubular member, and means in said end plate for sealin the shaft opening therein.

14. n a fluid displacement apparatus, the combination of a fluid displacement mechanism, a support for operatively mounting said mechanism, a shaft ournaled in said support for actuating said mechanism, an open-ended horizontally disposed casing adapted to removably receive said support and wholly enclose said mechanism, end plates for hermetically sealing said casing, one of said end plates being provided with an. opening for receiving said shaft, and means cooperating with said shaft and said apertured end plate for sealing said shaft opening.

15. In a fluid displacement apparatus, the combination of an open-ended iliorizontally disposed casing, end plates for hermetically sealing the ends thereof, a cage removably supported in said casing independently of. said plates, and a fluid displacement mecha-.

nism operatively supported within said casing by said cage.

\ 16. In a fluid displacement apparatus, the combination of an open-ended casing, end plates for hermetically sealing the ends thereof, a cage removably supported in said casing, a fluid displacement mechanism operatively supported Within said casing by said cage,

and a shaft operatively connected to said mechanism and projecting outwardly through one of said end plates.

1". 'Ina fluid displacement apparatus, the

combination of an open-ended horizontally disposed casing, end plates for hermetically sealing the ends thereof, a cage removably supported in said casing, a fluid displacement mechanism operatively support-ed within said casing by said cage, a shaft operatively connected to said mechanism, a tubular extension on one ofsaid end plates, a cap closing the outer end of said extension and having an opening for receiving said shaft, and a shaft seal cooperating with said cap and said shaft for sealing the shaft opening.

18. In a fluid displacement apparatus, the combination of an open-ended casing, end plates for hermetically sealing the ends thereof, a cage removably arranged in said casing and having a convex upper end which bears against the concave underside of the upper half of said casing, a fluid displacement mechanism operatively supported within said casing by said cage, and adjustable means in the lower end of said cage for engaging the lower half of said casing and removably supporting said cage therein.

19. In a fluid displacement apparatus, the combination of an open-ended casing, end plates for hermetically sealing the ends thereof, a cage removably arranged in said casmg and having its upper end bearing against the underside of the upper half of said casing, a fluid displacement mechanism operatively supported within said casing by said cage, means for removably securing said cage within said casing, and inlet and outlet connectlons in communication with said mechanism and extending from the upper half of said cage outwardly through said casing.

20. In afluid displacement apparatus, the combination of an open-ended casing. endplates for hermetically sealing the ends thereof, a cage removably arranged in said casing, a fluid displacement mechanism operatively supported within said casing by said cage, means adjustably secured in the lower end of said cage for bearing against the lower half of said casing and securing said cage therein, inlet and outlet connections secured to the upper half of said cage and said casmg and communicating with said fluid displacement mechanism, said inlet and outlet connections extcnding outwardly from said casing, and packing means for sealing said connections with respect to said casing.

21. In a fluid displacement apparatus, the combination of an open-ended casing, end plates for hermetically sealing the endstheiof, a cage removably supported in said casing, a fluid displacement mechanism operatively supported within said casing by said cage, a lubricant pump having intake communication with said casing and operable by said fluid displacement mechanism, and a connectionfor conveying the lubricant from the pump exteriorly of said casing and discharge esser? ing it against the upper portion of said mech- 'anism.

22. In a fluid displacement apparatus, the combination of an open-ended casing, end

plates for hermetically sealing the ends thereof, a cage removably supported in said casing, a fluid displacement mechanism operatively supported within said casing by said cage, an oil pump arranged adjacent to one of said end plates and having connection with the lower portion of said casing for pumping the oil therefrom, and a pipe connection connected to the discharge end of said pump for conveying oil eXteriorly of said casing and returning it thereinto at a point adjacent to said mechanism.

23. In a fluid compressor, the combination of a hermetically sealed casing, a cage removably arranged in said casing compressing mechanism carried by said cage within the 11 per half of said casing and wholly enclosed thereby, bearings carried by the lower portion of said cage, a shaft journaled in said bearings and operatively associated with said compressing mechanism, an oil pump arranged within said casing and actuated by said shaft and having its inlet communicating with the lower portion thereof, and a coiled pipe located exteriorly of said casing and having one end connected to the outlet of said pump and having the other end connected to the upper portion of said casing whereby the oil collected in the lower portion of said casing is circulated through and cooled by said coiled pipe and discharged into the upper portion of said casing adjacent to said compressing mechanism whereby the latter is constantly bathed with oil.

24. In a fluid compressor, the combination of a casing, compressing mechanism arranged therein and held enclosed thereby, said mechanism including fluid chambers sealed from said casing and having'fluid inlet and outlet connections extending outwardly through said casing, a shaft operatively associated with said compressing mechanism, an oil pump within said casing and operable bysaid shaft, said oil pump having its inlet opening into the lower portion of said casing which forms a sump for the oil, and a coiled pipe arranged exteriorly of said casing and having one end connected to the outlet of said pump and having its discharge end connected to the upper portion of said casing whereby the oil is cooled exteriorly thereof and returned thereto at a point above said compressing mechanism for insuring eflicient distribution of said oil over said compressing mechanism.

25. In a fluid compressor, the combination of a compressing mechanism, a sealed casing for receiving and wholly enclosing said compressing mechanism, an oilpum'p having intake inthe lower half of said casing, a pipe connection located exteriorly of said casing and having one end connected to the discharge of said pump and having the opposite end opening into said casing at a point above said compressing mechanism for insuring distribution of the oil throughout said compressing mechanism, and cooling means disposed exteriorly of'said casing for cooling said oil before the return thereof to said casing.

26. In a fluidcompressor, the combination of a compressing unit, a motor therefor, a centrifugally controlled sectional fly wheel device for operatively coupling said motor with said unit, a horizontally disposed coiled pipe arranged between said motor and said unit, a longitudinally disposed fan arranged within said coiled pipe and carried by said fly wheel device for forcing air outwardly between the coils of said pipe, and oil connections between said unit and said coiled pipe for circulating the lubricant of said unit through said pipe for coolin purposes.

27. In a fluid compressor, t e combination of a compressing unit, a motor therefor, a

.centrifugally controlled sectional fly wheel device for operatively coupling, said motor with said unit, a coiled pipe disposed horizontally between said motor and said unit coaxia-lly therewith, means carried by said fly wheel device for forcing air between the coils of said pipe, a casing for hermetically sealing said compressing unit, an oil pump communicating with the lower portion of said casing for forcing the oil therefrom into said coiled pipe, and a connectionconnected to the opposite end of said coiled pipe for returning the cooled oil to said casing and discharging it into said compressing unit.

28. In a fluid compressor, the combination ,of a compressing unit, a motor therefor, a centrifugally controlled clutching device for into said coiled pipe, and a return connec-,

tion leading from said coiled pipe for discharging the cooled oil into said casing at a point above and adjacent to said compressing unit.

29. In a fluid compressor, the combination of a stationary base, a supporting member supported by said base at a single point, a compressing mechanism and a motor therefor mounted on said supporting member, a centrifugally controlled sectional fly wheel device foroperatively. coupling said motor with said mechanism, a horizontally disposed coiled pipe arranged between said motor and said mechanism coaxially therewith and supported by said supporting member, a longitudinally disposed fan carried by said fly wheel device for forcing the air outwardly between the coils of said pipe, an oil pump communicating with the lower portion of said casing for forcing the oil therefrom into said coiled pipe, and a connection leading from said coiled pipe to said casing for discharging the cooled oil against said compressing mechanism adjacent to the compressing chamber thereof.

30. In a fluid compressor, the combination of a sealed casing, a compressing mechanism wholly contained therein and arranged in the upper half thereof, the fluid inlet and outlet of said mechanism extending outwardly through said casing, an oil pump operatively arranged Within said casing and having its inlet opening into the lower portion of said casing which forms an oil sump, whereby oil enters said pump from said casing, and a coiled pipe located exteriorly of, said casing and having its intake end connected to the discharge of said pump and having its other end connected to the upper half of said casing whereby the lubricating oil is pumped from said casing through said coiled pipe for cooling purposes and is then discharged into the upper portion of said casing adjacent to said compressing mechanism whereby the latter is constantly bathed with cooled oil. 1

31. In a fluid compressor, the combination of a sealed casing, a compressing mechanism wholly contained therein, a shaft journaled in said casing and actuating said mechanism, a pumping means arranged within said casing below said compressing mechanism and operable by said shaft, said pumping means having its inlet opening into the lower portion of said casing which forms an oil sump, and a coiled pipe located exteriorly of said casing and having its intake end connected to the outlet of said pumping means and having its discharge end connectedto the upper portion of said casing whereb "the lubricating oil contained in said casiig is circulated through said pipe for coolin purposes and is returned to said casing at a point above said compressing mechanism. f

32. In a fluid compressor, the combination of a hermetically sealed casing, a support disposed therein, compressing .mechanism mounted in said support and wholly contained within said casing, a shaft journaled in said support for actuating said compressing mechanism, a pump housing formed in said casing coaxially with said shaft and having its inlet communicating with the lower end of said casing which latter serves as a sump for the oil, an impeller carried by said shaft and operating in said pump housing for forcing the oil through the outlet thereof, and a 45 i mg means whereby 011 from the casing 1s 11 13) recast? coiled pipe located exteriorly of said casing and having its intake end connected to the outlet of said pump housing and having its discharge end connected to said casing above said compressing mechanism whereby oil contained in said casing is circulated. through said coiled pipe and cooled, and then discharged into said casing at a point whereby said compressing mechanism is constantly bathed with oil.

33. In a fluid compressor-,the combination of a casing, a support arranged therein, a compressing mechanism carried by said support within the upper portion of said casing, a shaft journaled in said support below said mechanism and operatively associated therewith, a pump housing formed in said casing coaxially with said shaft, an impeller fixed to one end of said shaft and operating in said housing, a coiled pipe located exteriorly of said casing, a pipe connection connecting the outlet of said pump housing with one end of said coiled pipe, and a pipe connection connecting the other end of said coiled pipe with said casing at a point above and adj acent to said compressing mechanism, said pump housing having inlet communication with the lower portion of said casing whereby the oil contained therein is circulated through said'coiled pipe and cooled thereby before its return to said casing.

3a. In a fluid compressor, the combination of a sealed casing, a support removablyarranged therein, a compressing mechanism carried by said support within the upper portion ofsaid casing, an oil pump disposed within said casing, a shaftjournaled in said support for actuating said mechanism and said pump, said oil pump having its inlet communicating with the lower portion of said casing, and a coiled pipe sectlon located exteriorly of said casing and having one end connected to the outlet of said pump and havin the other end opening into the upper half 0 said casing adjacent to said compressforced through said coiled pipe and cooled thereby and is discharged upon its return to said casing against said compressing mechamsm.

In testimony whereof Ihereunto afix my slgnature this 30 day of December, 1926,

JOHN O. GARREY, 

